diff --git a/HISTORY.md b/HISTORY.md
index 2e3b03a..95cce0a 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,10 +2,13 @@
 
 ## 0.6.10
 - Fixed bug where changing a property type from "number" to "string" made existing properties uneditable.
+- Fixed bug where `changed()` was returning true for values that had not changed.
+- Fixed certain error's returned as HTML rather than JSON.
 
 ## 0.6.9 
 
-- Fixed bug where `internal-client` was not accessible from modules
+ - Fixed bug where `internal-client` was not accessible from modules
+ - Fixed restarts caused by 404s of unexpected http verbs
 
 ## 0.6.8
 
diff --git a/clib/ajax.js b/clib/ajax.js
index 6e0ef8d..6bd47c5 100644
--- a/clib/ajax.js
+++ b/clib/ajax.js
@@ -31,8 +31,11 @@ function sendRequest(url,options) {
   req.open(method,url,true);
   req.withCredentials = true;
   // req.setRequestHeader('User-Agent','XMLHTTP/1.0');
-  if (data)
-    req.setRequestHeader('Content-type', options.contentType || 'application/json');
+  if (data) {
+    req.setRequestHeader('Content-Type', options.contentType || 'application/json');
+  }
+  req.setRequestHeader('Accept', 'application/json');
+    
   if (typeof sendRequest.headers === 'object') {
     for (var k in sendRequest.headers) {
       if (sendRequest.headers.hasOwnProperty(k)) {
diff --git a/lib/resources/collection/index.js b/lib/resources/collection/index.js
index 7c20a73..3887009 100644
--- a/lib/resources/collection/index.js
+++ b/lib/resources/collection/index.js
@@ -440,7 +440,13 @@ Collection.prototype.save = function (ctx, fn) {
   };
 
   domain.changed =  function (property) {
-    if(domain.data.hasOwnProperty(property)) return true;
+    if(domain.data.hasOwnProperty(property)) {
+      if(domain.previous && domain.previous[property] === domain.data[property]) {
+        return false;
+      }
+      
+      return true;
+    }
     return false;
   };
 
@@ -466,7 +472,8 @@ Collection.prototype.save = function (ctx, fn) {
         prev[key] = obj[key];
         obj[key] = item[key];
       });
-
+      
+      prev.id = id;
       item = obj;
       domain['this'] = item;
       domain.data = item;
diff --git a/lib/router.js b/lib/router.js
index f81100c..9be4a53 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -3,6 +3,7 @@ var db = require('./db')
   , escapeRegExp  = /[\-\[\]{}()+?.,\\\^$|#\s]/g
   , debug = require('debug')('router')
   , doh = require('doh')
+  , error404 = doh.createResponder()
   , async = require('async');
 
 /**
@@ -83,7 +84,7 @@ Router.prototype.route = function (req, res) {
         } else {
           debug('404 %s', req.url);
           res.statusCode = 404;
-          res.domain.emit('error', new Error('Resource not found'));
+          error404({message: 'resource not found'}, req, res);
         }
       });
     });
diff --git a/test-app/public/index.html b/test-app/public/index.html
index 5e9dfb2..8073119 100644
--- a/test-app/public/index.html
+++ b/test-app/public/index.html
@@ -12,6 +12,7 @@
   <script>mocha.setup('bdd')</script>
   <!-- -- tests -- -->
   <script src="test/util.test.js"></script>
+  <script src="test/misc.test.js"></script>
   <script src="test/collection.test.js"></script>
   <script src="test/user-collection.test.js"></script>
 </head>
diff --git a/test-app/public/test/collection.test.js b/test-app/public/test/collection.test.js
index 6783ff8..911ec74 100644
--- a/test-app/public/test/collection.test.js
+++ b/test-app/public/test/collection.test.js
@@ -871,6 +871,17 @@ describe('Collection', function() {
       });
     });
     
+    it('should not return true when a value has not changed', function(done) {
+      dpd.changed.post({name: '$NO_CHANGE'}, function (c) {
+        dpd.changed.put(c.id, {name: '$NO_CHANGE'}, function (c) {
+          if(c.name != '$NO_CHANGE') {
+            throw new Error('incorrect name change');
+          }
+          done();
+        });
+      });
+    });
+    
     afterEach(function (done) {
       this.timeout(10000);
       cleanCollection(dpd.changed, done);
diff --git a/test-app/public/test/misc.test.js b/test-app/public/test/misc.test.js
new file mode 100644
index 0000000..d2aacdc
--- /dev/null
+++ b/test-app/public/test/misc.test.js
@@ -0,0 +1,17 @@
+describe('404s', function(){
+  it('should not prevent a server from responding', function(done) {
+    this.timeout(5000);
+    
+    var tests = 50;
+    var remaining = tests;
+    
+    while(tests--) {
+      dpd('/').post({foo: 'bar'}, function (res, err) {
+        remaining--;
+        if(!remaining) {
+          done();
+        }
+      });
+    }
+  });
+});
\ No newline at end of file
diff --git a/test-app/resources/changed/put.js b/test-app/resources/changed/put.js
new file mode 100644
index 0000000..dfedcb6
--- /dev/null
+++ b/test-app/resources/changed/put.js
@@ -0,0 +1,5 @@
+if(this.name === '$NO_CHANGE') {
+    if(changed('name')) {
+        this.name = 'saw name change';
+    }
+}
\ No newline at end of file